This chemical is primarily used in peptide synthesis as a protected amino acid derivative. It serves as a building block for constructing peptides, particularly in solid-phase peptide synthesis (SPPS). The fluorenylmethoxycarbonyl (Fmoc) group acts as a protective group for the amino functionality, ensuring selective reactions during peptide chain assembly. Its phenylpentanoic acid structure allows for the incorporation of specific hydrophobic or aromatic properties into the peptide sequence. This compound is valuable in pharmaceutical research, enabling the development of peptide-based drugs, bioactive peptides, and peptidomimetics. It is also utilized in the study of protein-protein interactions and enzyme mechanisms due to its ability to mimic natural amino acids in synthetic systems.